Intermittent-current conveyer for closed circuits.



1. H. WHEELOCK INTERMlTTENT CURRENTCONVEYER FOR CLOSED CIRCUITS.

APPLICATION FILED NOV- 3. I915. '1,17,43%.

Patented Apr. 4, 1916.

marresrariis PA ENT OFEImr JOHN H. WHEELOCK, WORCESTER, MASSACHUSETTS.

IN TERMITTENT-CURREN T CONVEYER FOR CLOSED CIRCUITS.

' 1'0 all whom, it may concern e it known" that I, JOHN H. VVHEELOCK,

- a citizen of the United States, residing at for Closed tion especially Way. eT

Further objects and advantages of the invention will appear hereinafter.

Reference is tolbe had to the accompanying drawings in whichparallel with the line 2-2 lines to indicate the .wiring .cally,

shaft by-an insulating washer 21;

Figure 1 is an elevation of a device constructed in accordance with this invention; Fig.2 is a sectional view on the line 2 -2 of Fig. 1; Fig. 3 is a sectional view on a plane and located at being connected by diagrammatiand Fig. 4 is a fragmentary view showing another position of the parts.

is invention is shown as comprising a the left, Figs. 2 and 3 mechanism all arranged on a single insulating plate 10. This plate supports a frame provided with clock-work 12 adapted to be operated by a crank 13 or equivalent device to: turn -.the main shaft 14. This furn1shes the motive power for the apparatus.

This shaft let is mounted in bearings on brackets 15 carried by the plate and it is provided with a series of metallic disks 17 constituting current conveying members, each having a. tooth 1S thereon arranged in different series to provide a. variety in the way of opening and closing the circuits.

17 are metallically clinnected with the shaft 14 on which they are he cam 19 is insulated from the On the plate are a series of brackets 22, disks 17. On each one opposite each of the of these brackets is pivoted a contact finger toward its disk 17 Specification of Letters Patent. Application filed November 3, 1915. Serial No. 59,466.

the notch vided with a high tension terminal 55*.

Patented Apr. 4. i are.

cular part by an adjusting screw 25. Each tooth l8 and its finger 23 together constitute a pair of contacts for completing a branch circuit.

A single bracket 27 is provided having a pivot 28 thereon on which is pivotally mounted a lever or operati g finger 29 0perated by the cam 19. This is held toward the disk by a spring 30 but kept away from intimate contact with it by an adjusting screw 31 when its end is v Fixed with respect to this lever 29 is an arm the end. This carried by a bracket 35 fixed and adapted to be adjusted b he teeth ing notch 20 and away from the terminal 34 which breaks the circuits. The lever 29 then rides up out of 20 as shown in Fig. cuit is made again at 33-84 and later the tooth 18 passes beyond the finger 23 While the current is flowing. ne of the brackets 15 a terminal 40, the bracket 27 is provided with a terminal 41, each of the brackets 22 is provided with an individual terminal 42, and the bracket is provided with a terminal 43. Also located on the plate is a terminal 44 and a terminal 4:; nected through a battery 46 by a wire 46* with the terminal 4.3. The terminal is directly connected with the wire 46 The terminal ii is connected with a selector 47 which can be of any desired kind and is connected by a wire with the terminal l1. The selector is provided with a plurality of wires 47 each coimected with one of the terminals 42.

The two terminals 44 and are connected with an electro-magnet 48 also mounted on the plate 10. This magnet is provided with an armature. 49 adapted to swing about a pivot- 50 and normally pressed away from the cores of the magnet y a. spring 51. The armature is provided with a spring 52 having a carbon terminal 53 thereon adapted to engage a similar carbon terminal fixedly mounted on a bracket 55 on the plate. This bracket is winch is conis provided with flowszormally the lever 2'9 is the carbon terminal 53 is connected with tbcmotlier high tension terminal 56 by a wire 5?.

The c eration of the CiQVlCe is as folin contact with the cam 19, the terminals 33-34 are the current is flowing from and later the lever will drop off into tlie corrcsiionding notch 20, The current Will continue to flow however from 46 to 40,

' ger drops oil its "io tb. Buvlby that time again established. Consequently, no arc can be firmly and positively and no insulation troubles can and coni'lections by the lever 29 thereof the main current will be reestablished from the battery through first named contacts coming out or its notch. it is to be observed that the to cause the contacts to separate only after the branch current is flowing through linger 23 and the several fingers 25 break their contact'only after the main circuit 1S 1 ade at these lingers upon the closing of tliecircuii; and the usual diiliculties dueto bloc arcing at'tliese points are entirely avoided. Moreover, the current is broken at the terminals 33 and While a finger 23 is still in contact with its tooth so that the arcing; there is entirely avoided. In this Way a closed circuit system can be employed Without injurious arcing. It is to be noted that all the disks 17 are metallically in'contact with the main. shaft so they fixed thereto arise.

The circuit established through the contacts 53 and 54: can of course be connected up to accomplish any desired result and no particular application or" this circuit is shown herein, as the particular application does notconstitute a part of this invention. Ordinarily it isa high tension current in comparison with that in the battery circuit.

Although I have illustrated and described only a single embodiment of the invention, 1 am aware of the fact that many modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not Wish tobe limited to all the details or the special a plication the invention shown and describcd,but

ll liat I do claim is:

1. In a current conveyor for a closed circuit system, the combination With a main line having a pair of contacts therein, and,

means for normally keeping said contacts closed and for opening them periodically, of a series of branch circuits connected with thereto to pro-venipletely closed branch circuit except when the line is closed at said contacts.

2. In a current conveyor for a closed circuit system, the combmatlon With a main line having a pair of contacts therein, and

.means for normally keeping said contacts closed and for opening them periodically,

of a series of branch circuits connected with said main line, means for closing and opening-said branch circuits individually during the operation of said main contact closing and opening means and timed relatively the closing of open branch circuit except when the-line is closed at said contacts. lever never conducts a current but acts" 3. In a current conveyor for a closed circuit system, the combination with a main line having a pair of contacts therein, and means for normally closed and for opening them periodically, of a series of branch circuits connected with said main line, means for closing and openlreeping' said contacts ing said branch circuits individually during the operation of said maincontact closing and opening means and timed relatively thereto prevent both the closing and opening of any branch circuit except when said contacts are closed. I

4-. In. a current conveying device for closed circuits, the combination with a plurality or" movable electrical current carryingmembers, i'novable lingers adapted to contact therewith, and separate branch circuits, one connected with each of said fingels, of a main pair of contacts connected parallel with all of saidbrancli circuits, and

means whereby said main contacts will be normally closed and Will be separated after one of said fingers is brought into contact with its current carrying member and the finger will break its contact therewith after the main contacts are again closed.

5, in. an electrical connecting device for closed circuits, trical circuit, and a plurality of branch circuits connected therewith, of a plurality of pairs of contact members, one pair being located in each branch circuit for opening and closing, it, a pair of terminals connected with the main electrical connecting said branch circuits with the main circuit parallel with said pair of tel minals, whereby a current can flow through any branch circuit when said terminals are separated, and means Wl by said vernal-- rials are normally loge her and are scparated alter any of said pairs of contact members in the branch circuits are brought into contact with each other to complete that braacu circuit.

circuit, means for the combination with an elec- 6. In an electrical connecting device for closed circuits, the combination with an electrical circuit, and a plurality of branch circuits connected therewith, of a plurality of pairs of contact members, one pair being located in each branch circuit, a pair of terminals in series-with the main electrical circuit, means for connecting all of said branch circuits with the main circuit parallel with said'pair of terminals, whereby a current can flow through each branch circuit .when said terminals are separated, and

means whereby said terminals are normally kept together and are separated after any .of said pairs of contact members in the branch circuits are brought into contact with each other to complete that branch circuit and are brought together again while the branch circuit contact members are still in contact with each other.

7. In an electrical connecting device for closed circuits, the combination with an electrical circuit, and a plurality of branch circuits connected therewith, of a plurality of pairs of contact members, one pair being located in each branch circuit, a pair of terminals in series with the main electrical circuit and with said branch clrcuits, means for connecting said branch circuits with the main circuit parallel with said pair of terminals, whereby a current can flow through each branch circuit when said terminals are In Y hand.

5 JOHN H. WHEELOCK. 

